• Title/Summary/Keyword: conventional fertilizer

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Influence of Controlled-release Fertilizer Levels on Rice Growth, Weed Control and Nitrogen Efficiency in Paper Mulching Transplanting (벼 종이멀칭이앙 시 완효성비료 수준이 벼 생육, 잡초방제 및 질소효율에 미치는 영향)

  • Jeon, Weon-Tai;Yang, Won-Ha;Roh, Sug-Won;Kim, Min-Tae
    • Korean Journal of Soil Science and Fertilizer
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    • v.39 no.6
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    • pp.345-350
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    • 2006
  • Recently we have interest on rice products developed by environment-friendly management. The technology of paper mulching was practised without herbicide in machine transplanting cultivation of paddy. A field experiment was conducted on Gangseo series (coarse loamy, mixed, nonacid, mesic family of Aquic Fluventic Eutrochrepts) at the National Institute of Crop Science (NICS), RDA, Suwon, Gyeonggi province, Republic of Korea in 2004. This experiment was carried out to evaluate rice growth, weed control and nitrogen efficiency by the different controlled-release fertilizer levels in paper mulching transplanting. Treatments consisted of conventional fertilization, controlled-release fertilizer (100%, 80%, 60%) compared with nitrogen amount ($110kg\;ha^{-1}$) of conventional fertilization and no nitrogen plot. Mulching paper consisted of recycled paper which was coated with biodegradable plastics. There were no differences between conventional rice transplanting and paper mulching on missing hills. Weed occurrence and control were diverse and low as fertilizer amount increased. Plant height and tiller number per hill increased as fertilizer amount decreased. There were no difference between controlled-release fertilizer 80% and conventional fertilization plot on rice growth traits. Leaf color and $NH_4{^+}-N$ in soil had similar trends. There was no difference in yield between controlled-release fertilizer 80% and conventional fertilization plot. Agronomic nitrogen-use efficiency was high as fertilizer amount decreased. Therefore, these results suggested controlled-release fertilizer 80% should be optimum amount under paper mulching transplanting of rice considering weed control, rice growth and nitrogen efficiency.

Yield and Free Sugar Contents of Burdock (Arctium lappa L.) depending on Nitrogen Levels

  • Lee, Ye-Jin;Sung, Jwa-Kyung;Lee, Seul-Bi;Lim, Jung-Eun;Song, Yo-Sung;Lee, Deog-Bae
    • Korean Journal of Soil Science and Fertilizer
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    • v.49 no.6
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    • pp.677-681
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    • 2016
  • Excessive nitrogen fertilization influences crop yields and quality as well as environmental pollution. In this study, yields, nitrogen use efficiency and free sugar contents of burdock (Arctium lappa L.) were evaluated at different levels of nitrogen fertilization. Nitrogen fertilizer was applied at 5 levels (0, 50, 100, 150, 200%) based on the conventional fertilization ($N=230kg\;ha^{-1}$), and phosphate and potassium fertilizer were treated by conventional P and K fertilization ($P_2O_5-K_2O=140-210kg\;ha^{-1}$) in all plots. The root yields of burdock were the highest in N 100~150% treatment plots. Nitrogen use efficiency and nitrogen recovery decreased from over N 150% treatment. Nitrogen uptake of root was greater than that of shoot in N 50~200% treatments. Fructose contents in root were inversely proportional to the level of nitrogen fertilization. As considering nitrogen recovery and root quality, economical burdock yield was obtained in N $230kg\;ha^{-1}$.

Effects of Eco-Friendly Organic Fertilizer on Growth and Yield of Angelica gigas Nakai (친환경 유기질 비료 시용이 참당귀의 생육과 수량에 미치는 영향)

  • Kim, Young Guk;An, Tae Jin;Yeo, Jun Hwan;Hur, Mok;Park, Young Shim;Cha, Seon Woo;Song, Beom Heon;Lee, Kyung A
    • Korean Journal of Medicinal Crop Science
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    • v.22 no.2
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    • pp.127-133
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    • 2014
  • This experiment was carried out to investigate the effect of several organic compost on the growth and root yield of Angelica gigas Nakai with organic cultivation. After fertilizing the soil with organic fertilizer, the dry weight of liming fertilizer showed a slow change, while microorganism fertilizer decreased about 29% until 20 day after fertilizing. At 110 days after fertilizing, microorganism fertilizer decreased more than liming fertilizer. Liming fertilizer decomposed slowly, while microorganism fertilizer decomposed early on rapidly but gently after 20 days in decomposed rate of organic fertilizer. Dried root yields per 10a of A. gigas were not significance between 277.6kg in conventional fertilizer and 277.7kg, 280.5kg in N 1.5, N 2.0 times of microorganism fertilizer. Decursin and decursinol angelate contents in A. gigas were 9.08 ~ 9.07% from N 1.0 and N 1.5 times in liming fertilizer, and 7.94 ~ 8.12% from N 1.5 times and N 2.0 times in microorganism fertilizer, compared to 7.31% of conventional treatment.

The Effects of Nitrogen Rates on The growth and Yield of Waxy Corn after Cultivating Hairy Vetch in Agricultural Fields with The Stream (하천변 농경지에서 헤어리베치를 재배한 후 질소시비량에 따른 찰옥수수의 생육과 수량에 미치는 영향)

  • Roh, Ye-Jin;Chung, Dong-Young;Ryu, Jin-Hee;So, Jung D.;Cho, Jin-Woong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.60 no.3
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    • pp.333-337
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    • 2015
  • This experiment was carried out to figure out the growth and yield of waxy corn after cultivating the hairy vetch which was mostly used as a green manure crop. The waxy corn showed the growth and yield efficiency relative to conventional culture after the hairy vetch was returned to as the green manure and the amount of nitrogen fertilizer increased, and the LAI was similar to the conventional culture when less than 18 kg. Length of ear slightly decreased compared to 188 mm of conventional culture when the hairy vetch was used as the green manure and the amount of nitrogen fertilizer was less than 9 kg, but the length of ear increased relative to the conventional culture when the amount of applied nitrogen fertilizer was more than 18 kg. The highest 100-kernel weight was 35.4 g with the hairy vetch and 27 kg of nitrogen fertilizer treatment. The lowest 100-kernel weight was 27.4 g with the hairy vetch and 0 kg of nitrogen fertilizer treatment. Quantity with the hairy vetch and 9 kg of the nitrogen fertilizer treatment was similar the conventional culture. Suger content with the hairy vetch and more than 18 kg of the nitrogen fertilizer treatment was higher than the conventional culture. Thickness of pericarp showed no difference among treatments.

Influence of Late Summer Fertilizer on the Yield and Cold Damage of Mulberry in Kangwon Province (강원도 지방의 뽕밭에서 철늦은 여름 덧거름이 수량 및 가지끝마름에 미치는 영향)

  • 김기석;최지형
    • Journal of Sericultural and Entomological Science
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    • v.35 no.1
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    • pp.17-20
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    • 1993
  • Cold damage of mulberry in Kangweon Province is generally higher that of other provinces. Farmers suspected cold damage caused from late summer fertilizer. To understand the effect of late summer fertilizer. To understand the effect of late summer fertilizer, two additional summer fertilizer times, August 10 and 20, were compared with conventional time(June, 20). Mulberry yield increased by 10~30% in 1m middle cut, and 10~17% in leaf picking method in August 10 treatment, compared with conventional. Additional summer fertilizer did not increase cold damage rate of branches. Leaf yield in leaf picking was higher by 6~29% that that of 1m middle cut.

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Compare Growth Characteristics and Yield of Green Manure, Chemical Fertilizer and Livestock Manure for Soybean Cultivation in Conventional-Tillage and No-Tillage (무경운과 경운에서 콩 재배를 위한 녹비와 화학비료, 돈분액비의 생육특성 및 수량비교)

  • Yoo, Jang-Hwan;Jung, Hyun-Jin;Jung, Hae-Ryoung;Park, Hyung-Jun;Kwon, Soo-Jeong;Roy, Swapan Kumar;Oh, Eun-Ji;Kim, Suk-Jin;Chung, Keun-Yook;Kim, Hong-Sig;Woo, Sun-Hee
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.62 no.4
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    • pp.346-351
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    • 2017
  • This study was conducted to establish the type and method of fertilization for no-tillage during the third year of No-tillage (NT) and Conventional-tillage (CT) practices, towards different kinds of fertilizers. In this experiment, the livestock manure showed higher in response to fertilizer effects of no-tillage. Comparing growth characteristics and yield in NT and CT. Regarding yield, there is no significant between livestock fertilizer and chemical fertilizer, but between livestock fertilizer and chemical fertilizer in conventional fertilization has significant differences. Based on the result, livestock fertilizer is effective way on the quantity of the crop. Nitrogen absorption of plant in livestock of no-tillage is more effective than conventional fertilization. In case of the phosphorus absorption and potassium absorption of plant, fertilizer effect has no significant. Nitrogen is highly absorbed in livestock fertilization of NT. Absorption of phosphorus and potassium are similar.

Investigation of Nitrate Contamination Sources Under the Conventional and Organic Agricultural Systems Using Nitrogen Isotope Ratios (질소 동위원소비를 이용한 관행농업과 유기농업에서의 질산태 질소 오염원 구명)

  • Ko, H.J.;Choi, H.L.;Kim, K.Y.
    • Journal of Animal Science and Technology
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    • v.47 no.3
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    • pp.481-490
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    • 2005
  • Nitrate contamination in water system is a critical environmental problem caused by excessive application of chemical fertilizer and concentration of livestock. In order to prevent further contamination, therefore, it is necessary to understand the origin of nitrate in nitrogen loading sources and manage the very source of contamination. The objective of this study was to examine the nitrate contamination sources in different agricultural system by using nitrogen isotope ratios. Groundwater and runoff water samples were collected on a monthly basis from February 2003 to November 2003 and analyzed for nitrogen isotopes. The nitrate concentrations of groundwater in livestock fanning area were higher than those in conventional and organic fanning area and exceeded the national drinking water standard of 10mg N/ l. The ${\delta}^{15}N$ranges of chemical fertilizer and animal manure were - 3.7${\sim}$+2.3$\textperthousand$ and +12.5${\sim}$26.7$\textperthousand$, respectively. The higher ${\delta}^{15}N$ of animal manure than those of chemical fertilizer reflected isotope fractionation and volatilization of '''N. The different agricultural systems and corresponding average nitrate concentrations and ${\delta}^{15}N$ values were: conventional farming, 5.47mg/e, 8.3$\textperthousand$; organic fanning, 5.88mg/e, 10.1$\textperthousand$; crop-livestock farming, 12.5mg/e, 17.7%0. These data indicated that whether conventional or organic agriculture effected groundwater and runoff water quality. In conclusions, relationship between nitrate concentrations and ${\delta}^{15}N$ value could be used to make a distinction between nitrate derived from chemical fertilizer and from animal manure. Additional investigation is required to monitor long-term impact on water quality in accordance with agricultural systems.

Effect of Topdressing Methods of Nitrogen Fertilizer on Growth, Yield and Storage of Onion(Allium cepa L.) in Mulch-Cropping System (양파(Allium cepa L,) 멀칭재배시 질소비료 추비방법이 생육, 수량 및 저장성에 미치는 영향)

  • 김우일;서전규
    • Food Science and Preservation
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    • v.5 no.2
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    • pp.127-132
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    • 1998
  • In order to fad out an efficient way of topdressing nitrogen fertilizer in mulch-cropping system of onion(Allium cepa L.), solid, slow-release, and liquid forms of nitrogen fertilizers were allied to cv. 'Changnyungdaego' various number of times at different time, with 5 topdress applications of solid fertilizer serving as a control. Whole basal application of conventional solid fertilizer and 2 slow-release fertilizers were labor-saving and showed improved storage quality of bulbs, but resulted in poor plant growth and considerably low yield due to fertilizer shortage from early April. This suggests that topdress application is necessary. Liquid form of nitrogen fertilizer was more effective for plant growth and yield and saving labor than the solid form. Early applications was effective for increasing yield and storage quality of onion bulbs harvested. Thus two applications of liquid form of nitrogen fertilizer in February and March at rome month interval are recommended in mulch crowing system of onion.

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Effects of Several Effective Microorganisms (EM) on the Growth of Chinese cabbage (Brassica rapa)

  • Hussein, Khalid A.;Joo, Jin-Ho
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.4
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    • pp.565-574
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    • 2011
  • The development of satisfactory alternatives for supplying the nutrients needed by crops could decrease the problems associated with conventional NPK chemical fertilizers. In this study, the effects of bacterial and fungal effective microorganisms (EM) on the growth of Chinese cabbage (Brassica rapa) were evaluated. This investigation was carried out parrallel with conventional NPK chemical fertilizer and a commercial sold microbial fertilizer to compare between each of their effect. Sterile water and molasses were served as controls. Azotobacter chroococcum effect also was studied either alone or in combination with the effective microorganisms on the growth parameters. In contrast to the bacterial EM, the fungal EM alone without A. chroococcum had a more stimulating effect than fungal EM combined with A. chroococcum. Results showed that seedling inoculation significantly enhanced B. rapa growth. Shoot dry and fresh weight, and leaf length and width significantly were increased by both bacterial and fungal inoculation. The results indicated that the NPK chemical fertilizer deteriorates the microflora inhabiting the soil, while the effective microorganisms either fungal or bacterial ones increased the microbial density significantly. This study implies that both of fungal and bacterial EM are effective for the improvement of the Chinese cabbage growth and enhance the microorganisms in soil. The results showed antagonism occurred between A. chroococcum and each of Penicillium sp and Trichoderma sp in both agar and plant assays. The data were statistically analyzed by ANOVA and Dunnett test.

Studies on Application of Organic-Compound Fertilizer on Hilly Mixed Sward Ⅱ. Effect of organic-compound fertilizer application on qualities of grasses (山地草地에 對한 有機質 複合肥料의 施用에 關한 硏究 Ⅱ. 有機質 複合肥料의 施用이 牧草의 品質에 미치는 影響)

  • Park, Geun-Je;Shin, Jae-Soon;Lee, Pil-Sang;Kim, Jae-Kyu
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.8 no.2
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    • pp.99-103
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    • 1988
  • With a purpose of finding out the effects of magnesium and boron enriched organic-compound fertilizer application on qualities of grasses on the hilly pasture, a field experiment was arranged with five different treatments as a randomized block design and lasted from September, 1984 to the end of growing season in 1986. The results obtained are summarized as follows: 1. Mean chemical components except NFE of grasses at the plots with organic-compound fertilizer application were appeared to contain slightly high comparing to single dressing. 2. Production of DCP with organic-compound fertilizer (1,170.2 kg/ha) was significanty increased by 20% comparing to single dressing (975.7 kg/ha) in the conventional fertilization level (p<0.05), but it was not significantly different between them in the low dressing level. 3. Production of energies (TDN, StE and NEL) with organic-compound fertilizer of low and conventional dressing level were appeared to increase by 10 and 13 to 15% than those of single dressing of the same levels, respectively. But it was not significant difference. 4. Like single dressing nutrient productions with organic-compound fertilizer were appeared significantly high due to increasing of dressing gradually (P<0.05-0.01) 5. Mineral contents of P and Mg at the plots with organic-compound fertilizer were a little higher, on the other hand, K, C/P and K/Ca + Mg equivalent ratio were slightly lower than those of single dressing, but the content of Ca tended to similar between them.

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